Paper-bag machine.



PATENTED DEC. 12, 1905.

C. F. SMITH.

PAPER BAG MACHINE.

APPLIOATION FILED JUNE 28,1904.

ll SHEBTS-SHBET 1.

Invmio? .Wnerrexy:

PATENTBD DEC. 12, 1905.

C. P. SMITH. PAPER BAG MACHINE.

APPLICATION nun JUNE 28,1904.

11 SHEETS-SHEET 2.

Ei'trzeyser:

PATENTBD DEG. 12, 1905.

0. F. SMITH. PAPER BAG MACHINE. APPLIOATION FILED was 28.1904.

11 SHEETSSHEBT 3.

W1 lnvemarx 5 7663565." kwrzes'fils mitk y/aml/ m M%W H as v PATBNTEDDEC. 12, 1905.

C. F. SMITH.

PAPER BAG MAGHINB.

nrmouxon FILED JUNE 28,1904.

l1 8HEETSSHEET 4.

Witnesses:

PATENTED DEC. 12, 1905.

C. F. SMITH. PAPER BAG MACHINE. APPLICATION FILED JUNE 28.1904.

11 SHEETS-SHEET 5.

Inventor. CkarZesFfi'mW/k Wznesses: @z 4 PATENTED DEG. 12, 1905.

C. P. SMITH.

PAPER BAG MACHINE.

APPLIUATION FILED JUNE 25,1904.

11 SHEETS-SHEET 6.

172002? Zor Cfiarles Ffi'flzzik ymdm PATENTED DEC. 12, 1905.

G. P. SMITH.

PAPER BAG MACHINE.

APPLICATION FILED JUNE 28.1904.

11 SHEETS-SHEET 7.

Hay/2211 PATENTED DEC. 12, 1905.

G. F. SMITH. PAPER BAG MACHINE.

APPLICATION FILED JUNE 28.1904.

11 SHEETS-SHEET 8,

Witnesses:

No. 807,211. PATENTED DEC. 12, 1905.

G. F. SMITH.

PAPER BAG MACHINE. APPLICATION FILED JUNE 28,1904.

11 SHEETS-SHEET 9,

[74 We Veda/1' I CiaarZesZlYma'tk PATENTED DEC. 12,1905, 0. P. SMITH.

PAPER BAG MACHINE.

APPLIGATION FILED JUNE 28.19.04.

11 SHEETS-SHEET 10.

jnyenor: UkarZeSZJmcZ /k the combined breaker and ironer.

, UNITED STATES PATENT OFFICE.

CHARLES F. SMITH, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO CON- TINENTALPAPER BAG COMPANY, A CORPORATION OF MAINE.

PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed June 28, 1904. Serial No. 214,563.

to furnish reliable means, which may be operated with accuracy at highspeeds, for formingthe diamond fold.

Another object of my improvements is to furnish simple and efficientmeans for folding the front and rear flaps of the diamond in theformation of the bag-bottom.

In the drawings accompanying this specification, Figure 1 represents aside elevation of' so much of a paper-bag machine of the class specifiedas will suffice to illustrate my improvements. Fig. 2 is a view similarto Fig. 1, but with one of the side frames and some other parts removedto more clearly show the remaining parts. Fig. 3 is a front elevation ofthe tucker-plate and its appurtenances and their operative mechanisms.Fig. 4 is an end elevation, partly in section, of a portion of the partsshown in Fig. 3 and of Thesection of Fig. 4 is taken on line c of Fig. 3and looking in the direction of arrow 0 in said figure. Fig. 5 is adetail elevation looking in the direction of arrow 0 Fig. 3, of the Yoscillating mechanism of the tucker-plate.

Figs. 6 to 17, both inclusive, are front and end elevations,respectively, of the diamondfolding mechanism, illustrating successivepositions of the several parts of said mechanism during the opening outof the forward end of the bag-blank and folding the same into thediamondfold. The end elevations ofFigs. 7, 9, 11, 13, 15, and 17 are partly insection, said sections corresponding to that of Fig. 4. Alsotherespective arrows in Figs. 7, 9, 11, 13, 15, and 17 indicate thedirection of view of the corresponding front elevations, respectivelyforinstance, arrow 7 of Fig. 7 indicates the direction of view of the frontelevation of Fig. 6, &c. Fig. 181s a side elevation,

partly in section, representing a modification of the breaker and ironermechanism; and Fig. 19 is a view similar to that of Fig. 18, showing theparts thereof at another stage of their operation. The section in saidFigs. 18, 19 is taken on line n n of Fig. 20 and looking in thedirection of arrow 1%. Fig. 20 is a plan view corresponding with Fig. 19and looking in the direction of arrow 9 in said figure.

Fig. 21 is a side elevation representing an other modification of thebreaker and ironer mechanism, and Fig. 22 is a View similar to that ofFig. 21, showing the parts at another stage of their operation. Fig. 23is a rear elevation of the flap-folding mechanism, and Fig. 24 is a planview of the same. Figs. 25 and 26 are side elevations showing theflapfolding mechanism and illustrating successive positions in theoperation thereof.

Similar characters refer to similar parts throughout the drawings.

The paper-bag machine in which I have in the present instance chosen toembody one form and which may be the preferred form of my improvementsmay comprise side frames, as 3 4, in which may be supported the variousparts of the machine. Drivingshaft 2 is suitably mounted for rotation insaid side frames and has fixed thereon gears 5 and 6. shaft by someconvenient means (not shown) and through gears 5 and 6 thereon to thevarious parts'of the machine. 1

The forming of the. tucked-paper tubing and severing it into bag-blanksbeing nopart of my present invention, I have not provided meanstherefor. Suffice it,therefore,to say that any one of several of thewell-knownmeans therefor is suitable for use in connection with,

my improvements, and I have illustrated in outline only, Fig. 1, rolls,as 21 22, for feeding the tucked paper tubing to severing means, whichmeans are indicated in a general way by S, and rolls 24 25 and 34 fordeliv ering the severed bag-blanks to the foldingbed. Rolls 21 22 arefixed on shafts 23 240, respectively, and may be caused to coact bymeans of gears 25 26 on said shafts, respec tively. Said gears may bedriven from gear 6 on shaft 2 through intermediate gears 27 28. Rolls 2425 are fixed to shafts 29 30, respectively, to which shafts are alsofixed gears 31 32, respectively, whereby rolls 24 25 may be caused tocoact. Gear 31 hasa wider face,-

Power may be communicated to said I than gear and projects outwardlybeyond the same for engagement with gear 33. Said gear 33 meshes withgear 28, whereby gear 31 may be actuated from gear 6 on main shaft 2.For feeding the bag-blanks from rolls 24 25 and delivering them to thefolding-bed rolls 34 are provided. Said rolls 34 35 are suitably mountedon shafts 36 37, respectively, and may be actuated for coaction by meansof gears 38 39, fixed on shafts 36 37 respectively, and'connected togear 33 by intermediate gear 40. The various gears are so proportionedthat rolls 21 22, 24 25, and 34 35 may each be driven at approximatelythe same surface speed as the faces of the folding-beds. Also, ifdesired, guide-tables, such as 41, between rolls 24 25 and 34 35, andsuch as 42, between rolls 34 35 and the tuckerplate, may be provided toinsure the desired direction of travel of the bag-blanks.

Extending inwardly from side frames 3 4 are tubular brackets 3 4*,respectively. Said brackets are provided with flanges 3 4 respectively,which flanges are secured to said side frames, respectively, by means ofbolts, as 110. Said tubular brackets serve as bearings for carrier-shaft7, and to their peripheries, respectively, are-fastened various parts ofthe machine, such as still-cams 171 and 18. On shaft 7 is fixedrevoluble carrier 9 and carrier-gear 8, which latter meshes with gear 5on main shaft 2. Pivotally mounted for oscillation on said carrier areone or more folding-beds. 1n the present instance three are shown, as 1011 12, arranged and adapted to revolve with carrier 9 about shaft 7 asan axis and to oscillate at predetermined times toward and away fromsaid axis. As these folding-beds are duplicatesof one another, adescription of one will sufiice for all. Folding-bed 10 is pivotallymounted at 13 in carrier 9, and on the inward end of depending arm 10thereof is pivotally mounted roll 14 for engagement with still-cam 160,whereby said folding-bed may be oscillated, as described. Also pivotedat 13 in said carrier is the usual front clip 15. Said front clip isprovided with an inwardly-extending arm 16, having pivotally mounted onits inward end roll 17 for engagement with still-cam 18 for closing saidfront clip onto the face of the forward part of folding-bed 10 or onto abagblank thereon. Said folding-bed 10 is also provided with the usualoppositely-disposed side clips 19 20 for clamping the lower plies,respectively, of the bag-blanks to the foldingbed. Said side clips maybe operated by the usual cams, as 171 172, Fig. 24, and in the usualmanner, as more fully shown and illustrated in United States Patent No.636,090, granted October 17, 1899, to Olaussen and Mortson, and to whichreference may be had.

In brackets 43 44, secured to side frames 3 4, respectively, by means ofsuitable bolts, as 45 46, is mounted tucker-plate and its operativemechanism, Figs. 3, 4, 5. Said tucker-plate preferably comprises a plateof metal, as 500, suitably mounted on a yokeshaped frame 51, which frameis fixed to trunnion-shafts, as 53 54, which shafts are mounted foroscillation in said brackets 43 44, respectively. Said plate 500 ispreferably arranged so that the plane of its working face intersects theaxis of trunnion-shafts 53 54 and with its working edge 50 extendingsubstantially beyond said axis. Said plate 500 is provided withyieldable members 51 51, projecting from yoke-frame 51 and preferably atsubstantially forty five degrees to the tucker-plate axis and at ninetydegrees to each other. Said yieldable members may be integral with plate50 or may be separate therefrom, as may be convenient. Saidtuckerplate'is also provided with the usual front hook 52, arranged andadapted for engaging the upper ply of the bag-blank to assist in holdingthe same on the tucker-plate. For oscillating the tucker -plate thefollowing means are provided: Projecting from bracket 43 is arm.56, tothe outer end of which is adjustably secured, by means of bolts 60 andconcentric with shaft 53, internal segmentgear 57. Arm 58 is mounted foroscillation on shaft 53, and at the outer end of said arm is revolublymounted planet-gear 59 and roll 61. Said planet-gear meshes on one sidewith segment-gear 57 and on the other side with gear 55, which last isfast to the outer end of trunnion-shaft 53. Suitably supported forrevolution in the upper parts, respectively, of frames 3 4 is shaft 62.By means of gear 101 thereon, which meshes with gear 8 on shaft 7, saidshaft may be rotated, and as gear 8 is three times as large as gear 101shaft 62 will therefore revolve three times for each revolution of shaft8. On one end of shaft 62 and outside frame 3 is fixed cam 63, arrangedand adapted for engagement with roll 61 on arm 58. By these means arm 58may be oscillated, and by planet-gear 59 thereon gear 55, trunnion-shaft53, and tucker-plate 50 may be 0scillated through double the angulardistance traversed by arm 58.

Oppositely disposed and mounted for oscillation on yoke-frame 51 areside clips 47 48. Said clips are arranged for coaction with yieldablemembers 51951 respectively, of the tucker-plate, and have their axes atangles substantially forty-five degrees, respectively, to the axis ofsaid tucker-plate. At the outer ends, respectively, of pivot-shafts 6566 of said side clips are arms 67 68, respectively. Each of said arms ismounted at about midway its length on its respective shaft, and on oneend of each of said arms is pivotally mounted a roll69 as to arm 65 and70 as to arm 66. vided with a pin-71 as to arm 65 and 72 as to arm66-for engagement with a spring-actuated plunger-73 as to arm 65 and 74as to The other end of each arm is proarm 66 for opening the respectiveside clips. Said plungers 73 74 are mounted in suitable recesses inbosses 75 76, respectively, on opposite sides of yoke-frame 51 and areurged outwardly by springs 77 78, respectively; Arms 67 68 may beadjusted and secured on their respective shafts by means of clampscrews67 68, respectively. For closing side clips 47 48 oppositely-disposedcams 79 80 of peculiar shape and arrangement are provided for engagementwith rolls 69 70, respectively. Said cams and their coacting rolls 6970, arms 67 68, and shafts 66 constitute means of great simplicity andefficiency for operating side clips 47 48, and I am thereby enabled toactuate side clips 47 48 without the use of any of the several more orless complex and easily-deranged devices heretofore used for thispurpose. Each of said cams 79 80 comprises two relatively adjustablemembers, and as said cams are right and left duplicates of each otherthe description of one will sufiice for both. The constituent members orparts 801 and 802 of cam 80 are provided with conical working faces 801*802, respectively, adapted for engagement with roll and parallel withthe axis thereof. Said cam members are of cup-likev shape and coaxial.Also part 802 is so disposed within part 801 that the working faces ofthe two members present a continuous surface for engagement with roll70, and said roll is of sufficient length to engage both members of saidcam. Outer member 801 is adjustably secured to sleeve 49 of gear 49 bymeans of clampscrew 81, and inner member 802 is adjustably secured tothe same sleeve by means of clampscrew 82. By these means said cam partsmay be adjusted relative to each other and relative to their actuatingmeans. Gear 49 is revolubly mounted upon an inwardly-extending sleeve 44of bracket 44, and said gear is actuated from carrier-gear 8 by thefollowing means: Said gear 8 meshes with gear 58 on shaft 83, whichshaft 83 is revolubly mounted in bracket 44, and on the in ner end ofsaid shaft is fixed gear 64, which meshes with gear 49, tothe sleeve 49of which the parts of cam are secured. By this train of gears cam 80 maybe revolved constantly in one direction, and the ratio of said gears issuch that said cam makes one revolution for each cycle of the machine.The construction and arrangement of cam 79 is in every way similar tothe construction and arrangement of cam 80, except that cam 79 is of theopposite hand from cam 80.

Cam 79 may be actuated in unison with cam 80 by the following means:Mounted for revolution in outwardly-extending portions of brackets 43 44is shaft 83. Fast on said shaft and meshing with gear 49, on the sleeveof which cam 80 is fixed, is gear 84. Also near the opposite end of saidshaft is fixed gear 85 of equal diameter to gear 84 and meshing withgear 86 of cam 79, whereby for each revolution of cam 80 cam 79 is alsoturned through one revolution.

Above the tucker-plate mechanism and supported for revolution inbrackets 87 88 is rock-shaft 89. Brackets 87 88 depend from side frames3 4, respectively, and may be secured thereto by any suitable meansas,for instance, bolts 87 88, respectively. Fixed to shaft 89 is arm 91, tothe free end of which is attached combined breaker and ironer 90. Alsofast to shaft 89 is arm 92, to the outer end of which is pivoted one endof lever-arm 93. The other end of said arm 93 is bifurcated at 93 forembracing shaft 62 for the guidance of said lever-arm. Pivotally mountedon arm 93 is roll 94 for engagement with cam 95, fixed on shaft 62. Roll94 may be urged toward the face of cam 95 by means of pull-spring 96,one end of which is attached to arm 92 and the other end to side frame4. By means of arm 92, lever-arm 93, roll 94 thereon, and cam 95 saidbreaker and ironer may be oscillated upwardly and downwardly aboutrock-shaft 89. Said breaker and ironer is provided at its forward endwith oppositely disposed wings 90 for breaking down and turning inwardlythe sides of the mouth of the bagblank at the time of the opening outthereof in the formation of the bag-bottom. Without some assistance atthese points at this time the bag-blank is peculiarly liable to be torn,and thereby result in an ill-formed or mutilated bag. I have discoveredthat by the use of said wings 90 90 said tendency to tear may be reducedto a minimum or entirely eliminated. At the rearward end of said breakerand ironer I in some instances employ one or more spring-fingers 90,whereby the diamond-folded bag-blank may be flattened down by a gentlepressure as said blank passes thereunder.

Referring now more particularly to Figs. 18, 19, and 20, I have thereinillustrated a modification of my improved breaker and ironer in whichsaid breaker and ironer 90 is divided lengthwise thereof into right andleft members 900 901. Each of said members comprises an ironing portionwhich may be provided with a rearwardly-extending springfinger 90 and anupwardly and outwardly flaring front end, as 90 Said members 900 901 areprovided with ears, as 90, each having a cavity wherein a pivot-pin, as154 or 160, is free to turn. Said members 900 901 are maintained intheir respective positions on said pivot-pins by any suitable means,such as collars 156, having set-screws 157 therein for engagement withtheir respective pins. Said pins are supported by arms, as 91 for pin155 and 162 for pin 154, each pin being fast in its respective arm. Arm91 is fast to shaft 89 for oscillation therewith. Said arm may beoscillated from the usual cam through roll 94, lever-arm 93, androck-arm 92. In the IIO -members an independent movement.

present modification, however, a multiplyinggear device is introducedbetween shaft 89 and arm 92, which arm is free to turn on said shaft,whereby for a given angular movement of said arm said shaft may be movedthrough twice the angular distance. This device comprises a miter-gear158, fast to bracket 88 and concentric with shaft 89, mitergear 159,mounted for free turning on the hub of arm 92, and miter-gear 161, fastto the outer end of shaft 89. Gear 159 meshes with both gears 158 and161, so that when arm 92 is swung through a given are gear 159 isrotated by stationary gear 159 upon the one side and imparts to gear 161upon the other side and shaft 89, to which gear 161 is fast, twicetheangular movement of said arm 92. By this means a long stroke of thebreaker and ironer may be obtained with a comparatively smalleccentricity of cam 95. Arm 162 is fast to shaft 163, which shaft ispivotally mounted in extensions 87 c 88 of brackets 87 88, respectively.Shafts 89 163 may be oscillated in unison by means of arms 164 165thereon, re spectively, and which arms are connected by means of link166 and pivot-bolts 167.

Referring now to Figs. 21 and 22, I have therein illustrated a furthermodification of my improved breaker and ironer, in which the breakermembers thereof are separate from the ironer members. In thismodification I employ two ironer members, as 901, similar to the ironerportions respectively illustrated in Figs. 18, 19, and 20, and mountedand. operative in a similar manner; but in this further modification Imount the breaker members on rock-shaft 163, and thereby afford saig Saibreaker comprises oppositely-disposed peculiarly-shaped scoop-likeparts, as 90 having hubs, as 90, respectively, whereby they are attachedto rock-shaft 163 for oscillation therewith.

On shaft 62 is also fixed the usual pasting and creasing segment 97. Apaste-reservoir may be supported by any suitable means, as rods 108109,projecting from frames 3 4, respectively, and paste may be suppliedto said segment 97 by means of rolls 98 99, suitably mounted in bearingson said reservoir and driven in proper time by means of gears 102 103,the former of which meshes with gear 101 on shaft 62. Said paste-segment97 is adapted and timed to transfer the paste to the face of the diamondfold as it passes thereunder, and creasers 104 105 are timed and adaptedfor forming in coaction with suitable grooves in the folding-beds,respectively, as grooves 106 107 in folding-bed 10, creases in thebag-blank for the folding of the front and rear flaps of the bag-bottom.

Oppositelyv disposed near side frames 3 4, respectively, and adjustablyclamped to tubular brackets 3 4", respectively, are bracketarms 111 112.Said arms extend-rearwardly and each comprises a main member 111* as toarm 111 and 112 as to arm 112, and a headpiece 111 as to arm 111 and 112as to arm 112. By means of bolts, as 113, members 111 111 of arm 111 maybe held together and said arm adjustably secured to tubular bracket3. Bymeans of bolts, as 114, the parts of arm 112 may be similarly held andsaid arm adjusted. Additional rigidity of arms 111 112 may be secured bymeans of a tie-bolt, as 120, opposite ends of which engage with ears 111112 of said arms, respectively. By means of shoulders thereon and nuts,as 120 said tie-bolt may be secured to said brackets. On the outer ends,respectively, of arms 111 112 and pivotally mounted inbearing thereonare rear flap-holders 115 116, respectively. Said flap-holders eachcomprises a blade-like member preferably provided with an arm or arms atits free end and extending in the line of travel of said free end. Inthe present instance two such extensions are shown on each flap-holder,thereby forming a T-head thereon. 115 115 as to folder 115 and 116 116as to folder 116. Said extensions are eflicient for prolonging the timeof cooperation of said folders with the folding-bed. The intimacy anduniformity of coaction of said flap-holders with the folding-bed may beincreased by making their blank-engaging portions curved to conform tothe curvature of the face of the folding-bed, as best shown at 116 inFig. 2. Pivot-shanks 115 116 thereof, respectively, are somewhatinclined to each other, and the axes thereof form acute angles,respectively, with the face of the folding-bed. The result of saidinclination of axes 115 116 is to cause rear flap-folders 115 116 totravel in a path 2) (indicated by a dot-and-dash line, Figs. 25 and 26)substantially parallel to the path of the face of the folding-bed duringtheir cooperation therewith. This feature greatly prolongs the time ofsuch cooperation, and

thereby adds materially to the efficiency of the rear flap-folders Inthe case of aflat reciprocating folding-bed pivotshafts115 116 wouldpreferably be arranged normal to the face of the folding-bed, so as tocause rear flap-f0lders-115 116 to travel parallel therewith. The outerends of shanks 115 116 have fixed theretobevel-gears 117 118,respectively, for engagement with similar bevel-gears 121 122,respectively, on cross-shaft 119, which shaft is supported in bearings111 112, extending rearwardly from arms 111-112. respectively. On thatend of shaft 119 ad jacent to frame 4 is fixed gear 123. Extendingrearwardly from said frame 4 is bracket 4, in which bracket is revolublymounted shaft 124. On the outer end of said shaft is fixed gear 125,meshing with carrier-gear 8 on shaft 7. On the inner end of shaft 124 isfixed gear 126, meshing with idle gear 127,

IIC

tion in arm 128, depending from bracket 4. The relative sizes of thegears in this train are such that for every cycle of the machine shaft119 will be turned through two complete revolutions, and throughbevel-gears 121 122 and 117 118, respectively, rear flap-folders 116will each make two complete revolutions.

Directly below the rear flap-folders is the front flap-folding and thedelivery mechanism. Mounted upon stud 131, projecting outwardly fromframe 4, is idle pinion 132. Said pinion meshes on the one side withcarriergear 8 and on the other side with gear 133 on shaft 134, whichshaft is supported in bearings in side frames 34. Also on said shaft 134and between the side frames are mounted gear 140 and roll 135. Inbrackets 3 4, extending rearwardly from frames 3 4, respectively, isfixed shaft 139, to which are fast spring-brackets 137 138. Said bracket138 is provided with a cylindrical pocket, as 145, containing apush-spring 146, which spring through plunger 147 engages car 151 ofbracket 150. The compression of said spring may be regulated by means ofa set-screw 148. Bracket 137 is provided with a similar spring and itsappurtenances for engagement with car 156 of bracket 155. mounted foroscillation on shaft 139, and they in turn support for revolution intheir inward ends shaft 130. Said shaft has fixed thereon gear 141 forengagement with gear on shaft 134 and roll 136 for coaction with roll135, also on shaft 134. By means of the trunnioning of arms 150155 onshaft 139 roll 136 may be lifted from contact with roll 135 by any bagor bag-blank passed between said rolls, and by means of the springs inarms 137 138 roll 136 may be urged toward roll 135 to grip any bag orbagblank passed between them.

Roll 136 for convenience has a portion of its periphery depressed or cutaway, and at one end of the cavity so formed is mounted a clip 129 forengagement with the forward end of the normal periphery of said roll.

Front clip 129 is illustrated as comprising two members, as 129 129",arranged on opposite sides of web 136 of roll 136. Said clip members arefixed on pivot-shaft 143, which shaft has its bearing in said web 136.Shaft 143 also has fixed thereon arm 144, bearing pivotally mounted atits free end roll 149 for engagement with still cam 152. Said cam isfast on sleeve 155, extending inwardly from arm 155. Member 129 of frontclip 129 is provided with a rearwardly-extending arm 129 for engagementwith spring-actuated plunger 153, suitably mounted on web 136 of roll136. By means of cam 152 front clip 129 may be lifted and prevented fromengagement with the periphery of roll 136, and by means ofspring-actuated plunger 153, when allowed by cam 152, said front clipmay be caused to engage said periphery and to grip thereto any Saidbrackets 155 are bag or bag-blank suitably placed thereon. The severalfolding-beds on-carrier 9 are provided with suitable cavities, as 168169, for the reception of the respective-members 129 129 of clip 129.

The operation of my improved machine is as follows: The various parts ofthe machine are assumed to be in their initial positions, and suitabletucked-paper tubing severed into ag-blanks being provided, one of saidblanks is delivered into the bite of rolls 34 35. The machine is nowstarted, and the bag-blank is fed by said rolls onto the contiguousfoldingbed, as 10, with the lower ply of the forward end of said blankunder the now lifted front clip 15, Fig. 4. Said front clip then gripsthe forward end of the lower ply of the bag-blank to the folding-bed,Figs. 2 and 7. Then side clips 19 20 enter the side tucks, respectively,of the bag-blank and grip the lower plies thereof to the folding-bed. Atthe same time the partial distention of the mouth of the bagblank causesthe upper ply thereof to pass upwardly over front hook 52 oftucker-plate 50. Also side clips 47 48. of the tucker-plate enter therespective side tucks of the blank and partially close thereon, Figs. 6and 7. The bag blank now continues its forward movement upwardly ontofront hook 52 and tucker-plate 50 begins its backward rotation ontrunnions 53 54, and when the bag-blank has reached its upper positionon said hook side clips 47 48 fully close thereon and grip the-blank tothe tucker-plate, Figs. 8 and 9. At the same time combined breaker andironer 90 moves downwardly about its pivot-shaft 89 and approaches thebag-blank. Tuckerplate 50, continuing its backward or anticlockwisemovement, edge 50 thereof presses the bag-blank onto the folding-bed,which fold-.

ing-bed swings on its pivot-shaft 13 toward axis 7 of carriage 9 incoaction with said edge 50 of the tucker-plate. .The mouth of thebag-blank is therebyopened, and the continued downward movement ofbreaker and ironer 90 brings wings 90* 90 thereof into contact with thesides, respectively, of the edge of the mouth of the blank, therebyturning said sides inwardly and assisting the folding thereof, whileminimizing their tendency to tear, Figs. 10, 11, 18, and 21. Thetucker-plate has now reached a position substantially normal to thefolding-bed. It thereupon continues its anticlockwise movement, and thefolding-bed now swings outwardly in coaction therewith. As the diamondfold nears completion breaker and ironer 90 continues to move downwardly(its breaker end passing out of action upover the tucker-plate) andpresents its rear or ironer end and fingers 90", extending therefrom,for engagement with the diamond fold to flatten the same down into itsfinal form ready for folding the end flaps thereof, Figs. 12 and 13.Tucker-plate 50 now turns over to itsextreme backward position, sideclips 47-48 thereof are tively, Figs. 16 and opened, and the continuedclockwise movethem. The tucker-plate then starts to turn in a clockwisedirection on its return to its initial position for operation uponanother bag-blank. At the same time breaker and ironer 90 returns to itsinitial position ready to repeat its operation on a succeeding.bagblank. Tucker plate 50 turns somewhat slowly during the early part ofits clockwise return movement, and the high parts of cams 79 8O overtakerolls 69 70, respectively, and thereby partly close side clips 17 18,respec- 17; but said tucker-plate soon increases its speed, and rolls 697 0 overtake and run ahead of their respective cams, so that by the timesaid tucker-plate has returned to its normal position, Fig. 4, for thereception of a bag-blank said rolls are on the low parts of theirrespective cams and side clips 4:7 18 are open. As said closing occursduring the idle travel of the side clips it is in no way objectionable,and 1 have thereby been enabled to simplify the machine and to afiordadditional time for the closing of the side clips onto the bag-blank.The bag-blank on its folding-bed now passes onward under creasing andpasting segment 97 whereby it is creased and paste is applied, as usual.At the same time front clip 15 is raised and the front flap of thediamond released.- The bagblank now passes onward to be acted upon byrear flap-folders 115 116. The creasing of the bag-blank bycreasing-segment 97 causes the front and rear flaps of the blank tospring up somewhat from the folding-bed, and thereby affords the leadingends respectively of the T-heads of rear flap-folders 115 116 accessunder the rear flap of said blank. Also, as the flap-folders travelfaster than the bagblank, said folders now strike against the under sideof the rear flap, Fig. 25, and turn it over unto the bag-bottom. Thencontinuing their onward movement said folders hold the rear flap down asit advances to the position, Fig. 26, where the front flap is to befolded downthereover. Just before reaching this position the raisedfront flap strikes against the periphery of roll 136 and is therebyfolded over toward the body of the blank. Clip 129 in said roll thengrips the folded front edge of the blank to the periphery'of said roll,and side clips 19 20 release their hold on the bagblank. Rearflap-folders 115 116, foldingbed 10, and roll 136, continuing theirrespective onward movements, the rearward ends of the T-heads of saidfolders retain the rear flap in its folded state until the partly-foldedfront flap passes well into the bite between the folding-bed and roll136. The rear flapfolders now swing outwardly respectively from off therear flap and, the folding-bed, the bag-blank passes downwardly betweenthe folding-bed and roll 136, and the folding of the front flap downonto the rear flap is there' by completed. Roll 136, still retainingpossession of the completed bag, continues its rotation in ananticlockwise direction, and the bag is thereby conducted between saidroll and roll 135, roll 136 swinging upward slightly on itstrunnion-shaft 139 to afford room for the passage of the bag, asdescribed. Clip 129 of roll 136 now.rises and liberates the finishedbag, which by the continued rotation of rolls 135 136 is discharged fromthe machine. Roll136 thereby coacts successively in folding the frontflap and in discharging the bagfrom the machine.

I claim 1. The combination of a revoluble foldingbed,means for formingthe diamond fold thereon, an integral combined breaker and ironercomprising a pair of oppositely disposed downwardly-reaching ears andmeans for moving said breaker and ironer toward and away from thefolding-bed; all combined and operating together substantially asdescribed.

2. In a breaker and ironer, the combination of a pair ofoppositely-disposed right and left ears, 90, 90 respectively, forturning inwardly the sides of the mouth of the bagblank, and one or moreyieldable fingers, 90, for flattening the diamond fold, all combined andoperating together substantially as described.

3. The combination with diamond-folding means, including a revolublefolding-bed, of an integral combined breaker and ironer comprising areversed- U -shaped member, and means for moving said combined breakerand ironer in approximate parallelism with. the

\ folding-bed.

4:. The combination with diamond-folding means, of the ironer 90, meansto operate the ironer in substantial parallelism with the diamond fold,breaker-ears 90, 90 and means to oscillate said ears on fixed trunnions,all

combined and operating together substantially as described.

5. The combination of a revoluble foldingbed with rear flap-fold erscomprising a pair of oppositely-disposed members, each pivotally mountedfor rotation on a pivot whose axis forms an acute angle with the face ofthe revoluble folding-bed, and means for rotating the flap-folders allcombined and operating together substantially as described.

6. The combination of a folding-bed with rear flap-folders comprising apair of oppositely-disposed members, each having an extension orextensions thereof in its line of travel respectively, to prolong itsperiod of cooperation with the folding-bed, and means for rotating theflap-folders allcombined and operating together substantially asdescribed.

7. The combination of a revoluble foldingbed and rear flap-folders; saidrear flap-folders being so mounted for rotation that their path oftravel, during their period of coaction With the folding-bed, issubstantially concentrio with the path of said folding-bed, and meansfor rotating the flap-folders all combined and operating togethersubstantially as described.

8. The combination of a folding-bed having a cylindrical Working face,side clips 19, 20, and rear flap-folders 115, 116, said rear flapfoldersmounted for rotation so that their path of travel, during their periodof coaction with the folding-bed, is substantially parallel to the pathof travel of. the folding-bed, and means for rotating the flap-foldersall combined and operating together substantially as described.

9. The combination of a revoluble foldingbed having its surface curvedin its plane of revolution, side clips 19, 20 thereon, and rearflap-folders, whose blank-engaging portions are curved to conformsubstantially to the curved surface of the folding-bed; all combined andoperating together substantially as described.

10. The combination of a revoluble foldingbed 10, side clips 19, 20thereon, ayieldablymounted roll 136, clip 129 thereon to grip theretoand remove the bag-blank from the folding-bed, said roll also forcoaction with said folding-bed'for folding the front flap of thebag-blank and roll 135 for coaction with roll 136 for discharging thebag from the machine all combined and operating together substantiallyas described.

11. The combination of afolding-bed 1O having a cylindrical face, sideclips 19, 20, rear flap-folders 115, 116, whose blank-engaging portionsare curved to conform substantially to the cylindrical surface of thefolding-bed yieldably-mounted combined folding and delivery roll 136,clip 129 and roll 135, all combined and operating together substantiallyas described.

Signed this 20th day of June, 1904, at New York, N. Y., in the presenceof two subscribing witnesses.

CHARLES F. SMITH.

Witnesses:

J. NUHE, J. MOOSSEUR.

